Best sellerSIM DOCOMO 1GB + VOICE | FREE CALLS 24/24
SIM DOCOMO 1GB + VOICE is an economical mobile plan designed for users who require very little mobile data while still enjoying all the essential features of a Japanese voice SIM. With 1GB of high-speed data per month, an official Japanese phone number, and free domestic calls (subject to plan terms), it provides a reliable and cost-effective communication solution for users who primarily rely on Wi-Fi in their daily lives.
Category | Specification |
SIM Type | Data + Voice SIM (Mobile Data & Voice Calls) |
Network | DOCOMO |
High-Speed Data | 1GB per month |
Network Technology | 4G LTE / 5G (subject to coverage and device compatibility) |
Voice Calls | Free domestic calls within Japan (subject to plan terms) |
SMS | Supports sending and receiving SMS |
Japanese Phone Number | Included (070 / 080 / 090) |
SIM Size | Nano SIM |
Compatible Devices | Smartphones and tablets with Nano SIM support |
Coverage Area | Nationwide within the DOCOMO network coverage area |
Specifications
How to activate
Additional Information
THE MOST COST-EFFECTIVE SOLUTION FOR LIGHT DATA USERS
SIM DOCOMO 1GB + VOICE is specifically designed for users who require minimal mobile internet while placing greater importance on voice communication and having an official Japanese phone number. It is an excellent choice for people who spend most of their time connected to Wi-Fi at home, at work, or at school, and only need mobile data when away from those networks.
Choosing the 1GB plan significantly reduces monthly mobile expenses while still providing all the essential features of a primary SIM card.
1GB OF HIGH-SPEED DATA FOR ESSENTIAL TASKS
The plan includes 1GB of high-speed data every month, providing enough connectivity for basic internet activities without paying for unused data.
Suitable for:
Sending and receiving messages via LINE or Messenger.
Checking email.
Using Google Maps while traveling.
Receiving banking app notifications.
Accessing public transportation applications.
Searching for information online.
Checking weather forecasts and schedules.
For users who are almost always connected to Wi-Fi, 1GB of mobile data is more than enough to stay connected whenever needed while keeping costs to a minimum.
FREE DOMESTIC CALLS 24/24
One of the biggest advantages of this SIM is free domestic calls within Japan, available 24/24 according to the plan's terms and conditions.
Ideal for calling:
Family members.
Friends and colleagues.
Customers.
Schools.
Hospitals and clinics for appointments.
Landlords and service providers.
This benefit is especially valuable for users who prefer traditional voice calls over internet-based communication.
OFFICIAL JAPANESE PHONE NUMBER
The SIM includes an official Japanese phone number (070 / 080 / 090), making it easy to access essential services and integrate into daily life in Japan.
It can be used for:
Receiving OTP verification codes.
Opening bank accounts.
Registering e-wallets.
Setting up electricity, water, and internet services.
Verifying online accounts.
Contacting government offices, companies, and schools.
Having a local Japanese phone number makes everyday living, studying, and working in Japan much more convenient.
STABLE CONNECTION ON THE DOCOMO NETWORK
The SIM operates on the reliable NTT Docomo network, offering extensive nationwide coverage from major cities to suburban areas.
Compatible devices automatically connect to 4G LTE or 5G (where available), ensuring clear voice calls and stable mobile data connectivity.
SMS SUPPORT FOR VERIFICATION AND COMMUNICATION
In addition to mobile data and voice services, the SIM fully supports sending and receiving SMS.
Users can conveniently:
Receive OTP verification codes.
Activate bank accounts.
Register payment applications.
Use two-factor authentication (2FA).
Receive important notifications from online services.
SMS support is an essential feature for accessing most everyday services in Japan.
QUICK INSTALLATION AND EASY TO USE
The SIM uses the Nano SIM format and is compatible with most modern smartphones.
Once activated, simply insert the SIM card into your device to immediately access:
High-speed internet.
Domestic voice calls.
SMS messaging.
Services requiring a Japanese phone number.
The setup process is simple and user-friendly, making it suitable even for newcomers to Japan or first-time DOCOMO SIM users.
KEY BENEFITS
1GB of high-speed data every month.
Free domestic calls within Japan 24/24.
Official Japanese phone number (070 / 080 / 090).
Supports sending and receiving SMS.
Reliable connectivity on the DOCOMO network.
Supports both 4G LTE and 5G networks.
Cost-effective for users who rely primarily on Wi-Fi.
An ideal primary SIM for voice calls, SMS verification, and essential services in Japan.
